Some locations have lots of money for truant officers, intervention programs, etc. Some don't. Maybe Kenner, LA puts its limited resources into more pressing problems, like drug trafficking (we certainly know that was going on).
I totally understand what you mean, but I think Lola took a gamble that giving Lashanta unconditional positive regard would help more than hurt. After Mom saying she didn't want no fat-ass daughter (or whatever it was), some unconditional positive regard might have helped. I think Lola bet wrong, but I see why she did it.